shell-completion: add bash-completion for systemd-vpick command

Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

shell-completion/bash/meson.build

@@ -30,6 +30,7 @@ items = [['busctl',              ''],
          ['systemd-nspawn',      ''],
          ['systemd-path',        ''],
          ['systemd-run',         ''],
+         ['systemd-vpick',       ''],
          ['udevadm',             ''],
          ['bootctl',             ''],
          ['run0',                ''],

shell-completion/bash/systemd-vpick

@@ -0,0 +1,60 @@
+# shellcheck shell=bash
+# systemd-vpick(1) completion                      -*- shell-script -*-
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# systemd is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with systemd; If not, see <https://www.gnu.org/licenses/>.
+
+__contains_word() {
+    local w word=$1; shift
+    for w in "$@"; do
+        [[ $w = "$word" ]] && return
+    done
+}
+
+_systemd-vpick() {
+    local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]} words cword
+    local comps
+
+    local -A OPTS=(
+        [STANDALONE]='--help -h --version'
+        [ARG]='-B --baseline -V -A -S --suffix --type -p --print --resolve'
+    )
+
+    _init_completion || return
+
+    if __contains_word "$prev" ${OPTS[ARG]}; then
+        case $prev in
+            -p|--print)
+                comps='filename version type arch tries all'
+                ;;
+            --resolve)
+                comps='yes no'
+                ;;
+        esac
+        COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
+        return 0
+    fi
+
+    if [[ "$cur" = -* ]] || [[ -z ${comps-} ]]; then
+        COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
+        return 0
+    fi
+
+    COMPREPLY=( $(compgen -W '${comps-}' -- "$cur") )
+    return 0
+}
+
+complete -F _systemd-vpick systemd-vpick